Guard for incandescent electric lamps.



No. 797,250. PATENTED AUG. l5, 1905.

C. P. ANDERSON.

GUARD FOR INGANDESGENT ELBGTRIG LAMPS.

APPLIUATION FILED MAB.. 17, 1905.

ATENT lilllil.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed March 17, 1905. Serial No. 250,673.-

Be it known that l, @Hannes P. Annnnson, a citizen of the United States,residing' in the city of St. Louis, in the State of l\/[issouri, haveinvented certain new and useful improvements in Guards for incandescentElectric Lamps, of which the following is a Yt'ull, clear, and exactdescription, reference being had to the accompanying drawings, 'formingpart oi lthis specilication.

My invention relates to a guard for protecting the bulbs oitincandescent electric lamps and preventing' breakage thereof by contactwith any object toward which the lamp may be moved while hangiiigsuspended and also whereby excessive vibration of the lamp-bulb isavoided.

Figure I is a perspective view oi my lampguard. Fig. Il is a view of thesocket of a lamp with the upper end of my guard applied thereto andshown in vertical section. Fig. lll is a cross-section through the endsol the clamp-band of the guard. Fig. lV is a crosssection through aportion of the guard, as seen in Fig. I. Fig. V is a cross-seetionthrough a modilication ot my guard. Fig. VI is a perspective view of aportion o'll the wires in the modilied form of guard shown in Fig. V.Fig. VII is a cross-section of another modification.

1 designates a plurality ot longitudinal main wires of myguard, whichare disposed in a eircleand are inclined inwardly from verteXes 2intermediate ot the ends of the guard, so that the circle of the guardis greater at a point intermediate of the ends of the guard than thecircles at the ends ot' the guard. At the angles formed by the vertexesof the wires il. is located a spreading-ring 3, through which the wires'l are threaded. This spreading-ring being' located at the pointmentioned is held from movement longitudinally of the guard upon thewires, due to the wires being' inclined inwardly in each directiontherefrom, and therefore the spreading-ring will maintain its positionwithout any securing means, although, if desired, the ring may besoldered to the wires.

4 is a lower ring through which the lower ends of the longitudinal wiresl are threaded and secured by having their ends bent around said ring,as seen in Fie'. I. This lower ring is of sufficient interior diameterto permit of a lamp-bulb being passed therethrough to have its neckseatedy iu the lamp-socket with out the necessity of removing the guardfrom the socket to which it is fitted in the manner to be presentlyexplained.

5 designates a clamping-band having ends (i and 7, through which a screw8 is inserted, the end 7 being of loop lorm and tapped for the.reception oi the threaded end ot said. screw, thereby aliording greaterbearing lor the screw when it is introduced into the band. '.lhe upperends of the longitudinal wires Il. are threaded through the band 5, andthe terminations l of the wires are bent down wardly at the interior otthe band, as seen in Figs. l and lI. These terminations are therebydisposed in a circle within the band in a position to bear against theneck A ol' the lamp-socket and their lower points by engaging againstthe usual bead B upon the socket-neck serves to ettectually hold theclamp-ring ilirommove ment on the socket alter it has been appliedthereto. 1t will be seen that by theconstruction described theterminations ot the longitudinal wires may be made to lit above thesocket-bead irresijiective 01? the degree olE space surrounding thesocket above the bead to which a clainping-band may be applied.

9 designates a cusinon-supporting ring located interior ot thespreadingering 3 and concentric therewith, the said ring 9 being securedto the spreading-ring by arms 10, ete tending outwardly from the ring 9and secured. to the spreading-ring.

l1 is a coiled cushion mounted upon the ring 9 and which is adapted tosurround and hear against the portion olf the lamp-bulb oli greatestdiameter, whereby vibration is citeetually prevented. that the coiledcushion be located around the lower portion ot the bulb, which is thathaving the greatest diameter. The cushion-spring is also ot' materialutility in avoiding sudden jar to the lamp-bulb due to the guard comingin contact with any object.

.lt will be seen that in the use of a guard constructed in accordancewith my improvement the guard may be applied to a lampsocket andAthereafter lamp-bulbs may be introduced into and withdrawn from thelampsocket without any necessity whatever oi removal of the guard, thisbeing due to the lower ring l oi" the guard being oif sutiicientdiameter to permit o'l the lalnp-bulb being freely passed therethroughYfor introduction into the socket and withdrawal therefrom. By thisarrangement l avoid any manipulation of the '.lo this end it isnecessary.

guard and obviate the danger of the guard being taken ofi and lost ordisplaced when a new lamp is' to be put into the socket and also avoidmaking the guard in sections to permit of its being opened to insert andremove the lamp-bulbs.

In Figs. V and VI, I have shown a modification in which .thelongitudinal wires lb are of the same configuration as the wires l. Inthis modification, however, I utilize a spreading-ring 3b, that isindented at intervals to receive the longitudinal wires instead ofthreading -the wires through the iing. The lower ring Ib is alsoindented at intervals to receive the connection of the lower ends of thelongitudinal wires instead oil threading' them therethrough. In thismodification I utilize a cushion-ring 1lb, that is of rectangular shapeand which is wrapped around the spreadingring 3b at the junctions of thelongitudinal wires therewith, as seen in Iilig.V V` this ring beingadapted to bear directly against the lamp-bulb in lieu of the coiledcushion ll.

In Fig. VII, I have shown another modification in which thespreading-ring 3 is of twisted form and the longitudinal wires lC arethreaded through eyes in said ring. This modification correspondsotherwise to the modification shown in Figs. V and VI in having a lowerring 4I, to which the longitudinal disposed in a circle, a clamp-bandfor securing said wires to a lamp socket, a continuous spreading-ringinterposed between the ends of said wires and to which the wires areiitted, a continuous cushion-supporting ring secu red to saidspreading-ring, and a continuous coiled cushion surrounding saidsupporting-ring and arranged to bear against the lower end of thelamp-bulb, whereby the lamp-bulb is held from vibration, substantiallyas and for the purpose set forth.

CHA@ P. ANDERSON. In presence of- E. S. KNIGHT, NELLin V. ALEXANDER.

